@@ -19,10 +19,11 @@
 #define _TLSINT_H
 
 #include "tls.h"
 #include <errno.h>
 #include <string.h>
+#include <stdint.h>
 
 #ifdef __WIN32__
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #include <wincrypt.h> /* OpenSSL needs this on Windows */
@@ -162,7 +163,9 @@
 void            Tls_Free(char *blockPtr);
 void            Tls_Clean(State *statePtr);
 int             Tls_WaitForConnect(State *statePtr, int *errorCodePtr);
 
 BIO             *BIO_new_tcl(State* statePtr, int flags);
+
+#define PTR2INT(x) ((int) ((intptr_t) (x)))
 
 #endif /* _TLSINT_H */